생분해성 지방족 폴리에스테르에 관한 연구(V) : Copolyesterethylene/LDPE 블렌드의 열적 성질 및 기계적 성질

박태욱; 강혜정; 김용주; 이치규

Journal of the Korean Industrial and Engineering Chemistry, Vol.5, No.6, 1068-1077, December, 1994

Export Citation

생분해성 지방족 폴리에스테르에 관한 연구(V) : Copolyesterethylene/LDPE 블렌드의 열적 성질 및 기계적 성질

Study on the Biodegradable Aliphatic Polyester(V) : Thermal and Mechanical Properties of Copolyesterethylene/LDPE Blend

박태욱, 강혜정, 김용주, 이치규

초록

생분해성 고분자의 실용화 검토를 위하여 생분해성 Copolyesterethylene(CPEE)과 LDPE를 0∼100%까지 10% 간격으로 전조성에 걸쳐 용융 블렌드하였다. 각 조성에서 블렌드한 시료의 녹는점 변화, 용융 엔탈피, 결정화 온도 및 결정화 엔탈피를 시차주사열량계고 측정하여 miscibility에 관하여 고찰하였으며 만능시험기를 이용하여 인장강도 및 신장률을 측정하였다. 열분석 결과로부터 CPEE의 조성이 30%일 때까지 약간의 miscibility를 보임을 알 수 있었으며, 인장 강도값으로부터는 CPEE조성이 30∼80%를 제외한 조성에서 유용한 compatibility를 갖는 것을 알았다. SEM관찰을 통한 각 조성에서의 형태학적 모습으로부터 이들 상용성의 결과를 확인하였으며, 또한 CPEE/LDPE블렌드 각 조성에 대한 생분해성을 미생물 접종 4주 후의 중량감소율을 측정하여 확인하였다.

Blend samples of biodegradable copolyesterethylene(CPEE) with LDPE were prepared by melt-mixing through 0 to 100% per 10% interval for studying of common use of biodegradable polymer. Miscibility behavior of blend samples has been studied by observing the melting temperature change, melting enthalpy, cold crystallization temperature and crystallization enthalpy using differential scanning calorimetry. It was shown that 10 ∼30% blend composition of CPEE had the partial miscibility from the results of thermal analysis. Valuable compatibility has been observed in all blend composition except the samples of 30∼80% CPEE component from results of mechanical properties. Morphology of blends has been observed with scanning electron microscopy. Biodegrability of CPEE/LDPE blends has been evaluated by measuring the change of weight after the inoculation with specific microorganism.

[References]

Schnabel W, "Polymer Degradation: Principles and Practical Applications," Hanser International, Munchen (1981)
Darby RT, Koplan AM, Appl. Microbiol., 16, 900 (1968)
Tokiwa Y, Suzuki T, J. Ferment. Technol., 52, 393 (1974)
Tokiwa Y, Suzuki T, J. Appl. Polym. Sci., 26, 444 (1981)
Potts JE, Clendinning RA, Ackart WB, Am. Chem Soc. Polym. Prepr., 3, 629 (1972)
Bell JP, U.S. NTIS. AD-A Rep., No. 009577 (1979)
Griffin GJL, Adv. Chem. Ser., 134, 159 (1974)
Otey FH, Doane WM, "Starch in Plastics," ed. P.L. Whistler, J.N. Bemiller, and E.F. Paschall, Academic Press, New York (1984)
Gassner F, Owen AJ, Polymer, 33, 2508 (1922)
Kumagai Y, Doi Y, J. Environ. Polym. Degrad., 1, 81 (1993)
Paul DR, "Polymer Blends," 1, Academic Press, New York (1978)
Kim WN, Burns CM, Macromolecules, 20, 1876 (1987)
MacGregor EA, GreenWood CT, "Polymer in Nature," John Wiley & Sons, London (1982)
Gattiglia E, Turturro A, Pedemonte E, J. Appl. Polym. Sci., 41, 1411 (1990)
Kang HJ, Park TW, Kim YJ, Lee CG, Polym.(Korea), to submitted
Park TW, Kang HJ, Kim YJ, Lee CG, J. Korean Ind. Eng. Chem., 5(5), 889 (1994)
Kang HJ, "Study on the Synthetic and Evaluation of the Biodegradable Polymer (II)," Research Report of the Ministry of Trade, Industry and Energy (1993)
Nishi T, Wang TT, Macromolecules, 8, 909 (1975)
Nowlin TE, Kinssin YV, Wagner KP, J. Polym. Sci. A: Polym. Chem., 26, 755 (1988)
Wang TT, Nishi T, Macromolecules, 10, 421 (1977)

[1] Schnabel W, "Polymer Degradation: Principles and Practical Applications," Hanser International, Munchen (1981)

[2] Darby RT, Koplan AM, Appl. Microbiol., 16, 900 (1968)

[3] Tokiwa Y, Suzuki T, J. Ferment. Technol., 52, 393 (1974)

[4] Tokiwa Y, Suzuki T, J. Appl. Polym. Sci., 26, 444 (1981)

[5] Potts JE, Clendinning RA, Ackart WB, Am. Chem Soc. Polym. Prepr., 3, 629 (1972)

[6] Bell JP, U.S. NTIS. AD-A Rep., No. 009577 (1979)

[7] Griffin GJL, Adv. Chem. Ser., 134, 159 (1974)

[8] Otey FH, Doane WM, "Starch in Plastics," ed. P.L. Whistler, J.N. Bemiller, and E.F. Paschall, Academic Press, New York (1984)

[9] Gassner F, Owen AJ, Polymer, 33, 2508 (1922)

[10] Kumagai Y, Doi Y, J. Environ. Polym. Degrad., 1, 81 (1993)

[11] Paul DR, "Polymer Blends," 1, Academic Press, New York (1978)

[12] Kim WN, Burns CM, Macromolecules, 20, 1876 (1987)

[13] MacGregor EA, GreenWood CT, "Polymer in Nature," John Wiley & Sons, London (1982)

[14] Gattiglia E, Turturro A, Pedemonte E, J. Appl. Polym. Sci., 41, 1411 (1990)

[15] Kang HJ, Park TW, Kim YJ, Lee CG, Polym.(Korea), to submitted

[16] Park TW, Kang HJ, Kim YJ, Lee CG, J. Korean Ind. Eng. Chem., 5(5), 889 (1994)

[17] Kang HJ, "Study on the Synthetic and Evaluation of the Biodegradable Polymer (II)," Research Report of the Ministry of Trade, Industry and Energy (1993)

[18] Nishi T, Wang TT, Macromolecules, 8, 909 (1975)

[19] Nowlin TE, Kinssin YV, Wagner KP, J. Polym. Sci. A: Polym. Chem., 26, 755 (1988)

[20] Wang TT, Nishi T, Macromolecules, 10, 421 (1977)